<template>
  <div>
    <h1
      v-text="msg"
      ref="title"
    > </h1>
    <button
      ref="btn"
      @click="showDOM"
    >点我输出上方的DOM元素</button>
    <school ref="sch"></school>
  </div>
</template>

<script>
import school from './components/school.vue'

export default {
  name: 'App',
  components: {
    school,
  },
  data() {
    return {
      msg: "欢迎学习Vue"
    }
  },
  methods: {
    showDOM() {
      console.log(this.$refs.title)//真实DOM元素
      console.log(this.$refs.btn)//真实DOM元素
      console.log(this.$refs.sch)//school组件的实例对象（vc）
    }
  }
}
</script>

